I just pulled out the living room carpeting from my house built in 1924. There are old cat urine stains, new dog urine stains, part of the flooring is finished but the center is not. And there is a lot of white paint on the part that is finished. What do I do? Refinish? I somewhat like the plain wood in the bedrooms but the living room has me baffled. How do I get rid of the urine odors??